Possibility on the Detection the Defects in Micro Joints

Detection Process on the Defect in the Micro Joints by Infrared Thermal Imaging with Laser Irradiation (1st report)

Abstract

Detection process of the defect at the micro joints has been researched and developed based on that the temperature distribution of the joint surface is influenced by the degree of heat transfer coefficient at the interface by the laser irradiation with short duration. For micro-joints of QEP lead, etc. the defects can be shown to be detected theoretically and experimentally, and furthermore experimental results are confirmed by the computer simulation on thermal model of the joint.